Home / 631,316.40-871,237.56-344,863.20

Finding the Fourth Proportional to 631,316.40, 871,237.56 and 344,863.20

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Solution

The fourth proportional to 631,316.40, 871,237.56 and 344,863.20 is: 475,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,316.40 : 871,237.56 = 344,863.20 : x
  2. Step 2: Convert to fraction form
    631,316.40/871,237.56 = 344,863.20/x
  3. Step 3: Cross multiply
    631,316.40x = 871,237.56 × 344,863.20
  4. Step 4: Simplify right side
    631,316.40x = 300,457,772,901.79
  5. Step 5: Solve for x
    x = 300,457,772,901.79/631,316.40
  6. Step 6: Final answer
    x = 475,922.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.